title: Cytokeratin immunohistochemistry: a procedure for exclusion of pregnancy in chorionic villi-negative specimen.
mesh_terms: D000328:Adult; D002824:Chorionic Villi / Q000378:metabolism* / Q000473:pathology; D003475:Curettage; D005260:Female; D006801:Humans; D007150:Immunohistochemistry / Q000379:methods*; D007633:Keratins / Q000378:metabolism*; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000378:metabolism / Q000473:pathology; D015203:Reproducibility of Results; D014327:Trophoblasts / Q000378:metabolism* / Q000473:pathology
chemical_list: D007633:Keratins